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G. GooDLINB 8v. J. A. CLARK.

PIGKING MEGHANISM FOR ILJOOMS.

` Patented Mal 31, 1898.

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Nirnn Sfrnrns Aram. Veinen.

GEORGE GOODLINE, OF PATERSON, NEV JERSEY, AND JOHN A. CLARK, OFXVORCESTER, MASSACHUSETTS, ASSIGNORS -TO THE CROMPTON' da KNOXVLES LOOM"WORKS, OF XVORCESTFR, MASSACHUSETTS.

srnclrrenrxon foaming part of Letters Patent No. 604,897, einen may 31,ieee.

Serial No. 642,803. (No model.)

To all whom it may concern:

Be it known that we, GEORGE GOODLINE, residing at Paterson, in the Stateof New Jersey, and JOHN A. CLARK, residing,r at Xlforcestex', in theState of Massachusetts, citizens of the United States, have inventedcertain new and useful Improvements in Picking Mechanism for Looms, ofwhich the following is a specilieation,

Our invention relates to the picking meehanism of a loom-that is, themechanism for operating the picker-stick to cause the shutiles to bethrown through the shed.

Picking-shafts as usually constructed act as a fulcrmn of a lever of thefirst order, the shorter end of which carries a picking-roll aetuatedbya cani, the other end'of the lever being attached to a pickingdeverwhich actuates the shuttle when the lever is moved by I the cam to throwit across the Warp. In order to keep the roll in contact with the lowestpart of the cani after the picking takes place and preparatory to thenext action of the picking, a spring is employed, one end connected toan arm of the picking-shaft and the other end to some stationary part ofthe loomframe, so that when the cam 'aetnates the picking-shaft thespring, is extended, thereby producing additional stress upon thespring.

As the picking takes place, as the spring is connected to one arm of thepicking-shaft and the cam which aetuates the shaft is connected toanother arm, itfollows that considerable friction, and consequentlylossl of power, `is expended upon the bearing 'of the shaft at thattime, and te overcome this additional resista-nee the forni of the camis so shapedas to g' .t quicker motion to the shaft. Our invention isdesigned to ohviate the additional friction upon the hearing of theshaft by'encircling the end of the'shaft with a sprinfbr having one endsecured to it and the other end to a lixed part of the loom-frame. Theend of the spring which is secured to the shaft may be adj ustablyconnected thereto, whereby the stress of the spring; may be properlyproportioned to the resistance to be overcome to retain the rolljincontact with the cam without unnecessary, expenditure of power. ily

abled to use a cam with an easier incline than we otherwise could do.'

'We have shown in the drawings only Sullicientl parts of a loom with ourimprovements applied thereto to enable those skilled .in the Referringto the drmi'ings, ls'igure l is a side elevation of a portion ot' a loomside (the left-hand side) and our picking mechdircction of arrow a, Fig..l. Fig. 2 is a section on hne 2 2, Fig. l, looking in the direcsectionon line 3 3, Fig. l, looking in the directlon of arrow i), same figure,showing the picking-arm and roll.

hand side).

2 is the rocker-shaft, on which is secured the lower end of thelay-sword, and 4 is the rocker-iron, secured on the outer end ot therocker-shaft :2 and having the pickerfst-ick ini.,r motion at itsnpperend toward and away from the loom sido. 4

6 is the bottom shaft, having the piiking cam plate '7 fast thereon andcarrying the picking-cam S, adj ustably secured thereto.

All of the above parts may he of the ordinary construction employed, inthe picking mechanism of looms.

Extending on the outside of the loom side rock in bearings l0 l0',secured to the loom side. (See Fig. l.) ll-he picking-shaft 9 has anupright arm 1l fast thereon or integral therewith, which is connectedwith the picker-A stick 5 by a strap or connector 1:2. A-ninwardly-curved arm 18, fast on the picking.- shaft 9 .or integraltherewith, acts as a stop to strike against the loom side and limit theinward reekinr motion ol' the picker-shaft.

'lhc outer end of the arm 1l is fast on the pickingshaft 9 or integraltherewith, near the inner hearing l0' thereof, and extends art to whichour invention belongs to understand the construction and operationthereof.

anism combined therewith, looking in the.

In the accompanying,r dra\\'ings,.1 is apex` tion ofthe .loom side, (inthis instance the lett-l holder 5" pivotally supported thereon andcarrying the picker-stick 5, which has a swing-- this arrangement of.the spring we are en 5c tion ol' arrow b, same figure; and Fig. =3 is aI roll-that is, the arc of the circle through -ies on its inner end apicking-roll 15, mountrevolution of said cam and its engagement springon. the shaft 9 is in line with or very cai/ri instead of at a distance.

"other end by a link or wire'l with thelower under the lower bar of theloom side and cared to turn thereon, which is of cone shape, with thesmallest end of the cone farthest from the shaft The roll 15 extendsunder and in the path of the picking-cam S on the cam-plato 7, to beengaged on its upper surface by said picking-cam S as the bottom shaft 6revolves, to communicate motion to the picking-shaft 9 and through arm11 and connector 12 to the picker-stiche, to drive the shuttles throughthe shed.

The cone-shaped roll 15 is considerably longer or wider than thethickness of the picking-cam 8, as shown in Fig. 2, and the positionoit' said roll 15 cnthe arm 14 relatively to the picking-cam 8 is suchthat the first engagement of said cam 8 with the roll 15 in theoperation ofthe loom will be with the smaller end of said roll and thelast engag ment will be with the larger end of the which the roll 15 onthe arm 14 passes is such, relatively to the picking-cam 8, .that in the'with said roll it will pass from the smaller end of said roll to thelarger end at each pick of the loom, s o that there will beia gain ofmovement of the roll and the roll-arm 14, and

consequently of the picker-stick 5, lthrough connections to thepicking-shai' t 9,correspond ing to the inclination ofthe roll-surface15,

as will be readily understood by those skilled in the art. l

A coiled spring 1G encircles the inner end ol the picking-shaft 9 beyondthe bearing'lO and is .secured at one end to said bearin g and* at itsother end to a collar 17, adjustable on the shaft i) by a set-screw 17',and acts to rock said shaft and keep the picking-roll 15 in contact withthe cam plate 7 and pickingcam 8 as the same revolves. The position ofthe spring 16 on the picking-shaft 9 relatively to the arm 14 is suchthat thc action of said near the point where the arm le is connectedwith. said shaft, so that the action of the ig is applied directly tokeep the roll 15 conta-ct with the cam-plate 7 and picking- Therocker-iron 4 is preferably provided with a tube 1S for holding thespring-actuated pin 19, having a spiral spring 20, encircling the same,to push the outer enlarged end jill ol' the pin 1f? out from theouterend of the tube 18 (sce Fig. 2) to be engaged by thedownwardly-extending end 5 of the pickcr-stick holder 5" and act as ashuttle-caser, for when the point of the shuttle thrown from theopposite side strikes the top end (not shown) of'the picker-stick 5 theend 5'is carried into contact with the end of the springactuated pinlil, and thus eases the shuttle and prevents it from rebounding.

A spring 21, secured at one end. toa collar on.' the rockershaft-2 andconnected at its end 5' of the picker-stiel: `holder 5, acts to drawback the picker-stick o and keep the connector 12 taut and thepicker-stick 5 in its outward position.

The advantages of our cpnstruction of picking mechanism above describedand shown in the drawings will be readily appreciated by those skilledin the art.

The picking-shaft; .is supported near its back end by a bearing, and thepicking-roll arm is at one side of said bearing and a coiled spring atthe other side, by which construction the spring acts directly upon saidarm to keep the picking-roll in contact with its cam without suchfriction in the bearings as results from applying a spring at the bottomof the picking-stick in the ordinary way.'l

It will be noticed that the vertical arm 11 will movefrom a verticalposition, and-the .inwardly-curved arm 13 and the arm 14,with

its pickingroll15,will move downward when the shaft 9 is moved by thepicking-cam 8 to throw the shuttle, and the spiral spring 16 can be soaccurately adj usted by its collar 17' as to just overcome the gravityofthe parts when the picking-roll 15 has been moved by the picking-cam 8to'return or keep the roll in contact with the cam-plate -that is, the

spiral spring 16 will just balance the gravityl of the parts and keepthe picking-shaft in its normal position; but when the shaft is actuatedby the picking-camS the momentum of those partsiabove named will not bein any degree overeo me by the spiral spring 16. Consequently thismomentum is an important factor in throwing the shuttle, and 'permitsthe construction of the picking-cani 8 to be made of a much easierincline to throw the shuttle properly than in looms with pickingshaft ascommonly constructed. In addition to this the change of diameter ofthepickingroll 15 from the small part of the roll when the picking-shaft isrst actuated t0 the larger diameter at the end of the movement is alsoofmaterial advantage in producing a still easier incline on thepicking-cam 8. Either of these parts materially assists the picking, andboth combined give a still better result.

The arrangement of the picking-shaft on the outside of the frame withits inwardlyprojecting arm 14 on the inside permits of so arranging thearm 11 as to be conveniently connected by the connector 12 to thepickingstick 5,-and also -to permit the cam-plate 7 to be supported inimmediate proximity to the ILO supporting-box on the cam-shaft, so-,asto give the greatest rigidity to the` cam-plate 7 when the picking-camSis operating thepicking-shaft. This arrangement als 'permits thevertical arm 11 to be in its properlrelation to the picking-'stick 5, soas to draw the picking-stick forward at the proper time tb throw theshuttle without interfering with the usual construction of the lathesword or standard which supports the lay, as would be the case if thepicking-shaft was inside of theframe.

It will be understood that the details of to operate it; and apicking-shaft having a 'picking-roll arm secured thereto, of a spring'encircling said shaft,and having one end adjustabl'y secured thereto,and the other end .secured to a fixed part of the loom-frame,substantially as shown and described.

2, In a. picking mechanism for looms, the combination with thepicking-cam, and means', to operate it, and a picking-shaft having apicking-,roll arm secured thereto, of a spring encircling said shaft,and having one end secured thereto, and the other end secured toa fixedpart of the 100m-frame, substantially as shownv and described.

.3. In a picking mechanism for looms, the combination with the picking-carn,and means to operate it, and a picking-shaft and bear'in gstherefor, one end of the shaft extending be- 'yond its bearing, and apicking-armsecured to said shaft, of a spring surrounding the extendedend of the shaft, and having one end secured to the shaft, and the otherend secured to a fixed part of the loornl'frame, substantially as shownand described.

GEO. GOODLINE. JOI-IN A. CLARK.

Witnesses:

JUSTIN A. WARE, JOHN B. SYNE.

